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sci.equilibrium-constant-Kc Calculator
Calculates concentration equilibrium constant Kc from molar concentrations and stoichiometric coefficients, and converts to Kp using Kp = Kc(RT)^Δn. At 448 °C, Kc for H₂ + I₂ ⇌ 2HI = 50.5 — this reaction has equal moles of gas on both sides so Kp = Kc.
Inputs
Delta G Kj Mol
Capacity to do work (J or kWh). Conserved — converts between forms but total stays constant in a closed system.
T K
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Stoich N
Reference formula or conversion factor shown for context.
Results
Kc (concentration equilibrium)
The proportional relationship between two quantities.
Kp (pressure equilibrium)
Reference formula or conversion factor shown for context.
log₁₀(Kc)
Reference formula or conversion factor shown for context.
Kc = exp(−ΔG⁰/RT)
Reference formula or conversion factor shown for context.
ΔG⁰ interpretation
Qualitative summary of what the computed numbers mean in practical terms.
product/reactant ratio at equilibrium
The result of multiplying all input values together.